Here you can find the source of getClassFQNString(Class> clazz, StringBuilder sb)
private static void getClassFQNString(Class<?> clazz, StringBuilder sb)
//package com.java2s; /*// www .j a v a2s .c om * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import java.util.*; public class Main { private static final String KEY_DELIM = "."; private static void getClassFQNString(Class<?> clazz, StringBuilder sb) { Iterator<Class<?>> it = typeEnclosureHierarchy(clazz).descendingIterator(); while (it.hasNext()) { sb.append(it.next().getSimpleName()); if (it.hasNext()) { sb.append(KEY_DELIM); } } } private static LinkedList<Class<?>> typeEnclosureHierarchy(Class<?> clazz) { LinkedList<Class<?>> typeHierarchy = new LinkedList<Class<?>>(); do { typeHierarchy.add(clazz); } while ((clazz = clazz.getEnclosingClass()) != null); return typeHierarchy; } }